Device for pumping fluids



1930- J. R. MUIRHEAD ET AL 7 1,783,095

DEVICE FOR PUMPING FLUIDS Filed Nov. 20, 1928 John 13. Muir/wall dbhn W MIL ZZJ BY I; d

H T TORNE Y5 Patented Nov.25, 1930 NITED STATES PATENT-l JOHN none MUIRHEAD, or KIRKCALDY, JOHN WILLIAM MILLS, or ADELAIDE, a sourrrnusrnama, AUSTRALIA l 1 i a DEVICE FOR PUMTING spurns Application filed November 20, 1928, Serial No.

This invention comprises a device for removing water, air or other fluid from a receptacle. In particular it has been devised for removing'water or other liquid from a boat or the like, being applicable to .boats propelled by any means.

Our device comprises as its essential fea turesa tube having at or towards one end the inlet endan inlet valve and at ortowards its other end-the outlet endan outlet valve, and having intermediate its ends one or more comparatively large resilient bulbs by the alternate compression and eX- pansion of which gases, water or otherliquid may be forced through the tube. lVe may also provide a supplementary or by-pass tube passing around the main bulb or container and fitted with a supplementary bulb and valves whereby the main tube and bulb or container may be primed with fluid or the fluid may be exhausted therefrom.

In order that our invention may be the more clearly understood We will describe the same with reference to the accompanying drawings which are more or less diagrammatic and in which Fig. 1 is a sectional side View showing our invention fitted to a boat.

Fig. 2 is a plan view of our invention in its simplest form.

Fig. 3 is a section on line 3 3 of 2, showin a spring device for supplementing the action of the resilient bulb.

Fig. lis a plan view of a larger unit fitted i5 with a supplementary by-pass tube fitted -for priming and for evacuating the main tube and bulb or container.

The several parts'ot our device are preferably of such size and soproportioned that the resilient bulb or container 1 may be fastened upon the seat of the boat or upon the floor of same with the inlet end 2 ofthe tube upon the bottom andsubmerged in any water that may be within the boat and with the out let end 3 of the tube over the side of same. Or the outlet end may be passed through a suitable opening in the side or the bottom of the boat. The inlet portion of the tube is fitted with an inlet valve 4 and the outlet portion of the tube is fitted with an outlet valve 5. One or more of the occupants of the boat or otherwise.

320,616, and in Aust ralia November 26, 1927.

boatby sitting or.standing upon'the bulb or conta ner 1, as he or they sway from side to side or otherwise move upon them will cause i the bulb or bulbs or containers to be alternate- 55 ly compressed and expanded and water that may be in the bottom ofthe boat is drawn through the tube and forced overboard: The

bulb or bulbs are preferably held betweenjtop and bottom boards or gratings. Or the bulb (is or bulbs may be otherwise fixed where-they are subject to alternate compression and expansion by the motion of the occupants of the YVhen several bulbs are used additional Valves may be provided bQ- (3i tween them to prevent back flow. f i y The tube 2 and 3 is made preferably of rubber or canvas, and the bulbs 1 maybe made of rubber or other resilient material and may be provided withinternal springs or other means to supplement the expanding act-ion of the rubber or other resilient material if so desired. In Fig. 3 we have shown a spring de-. vice comprising two or ossed rings 6 connected by supplementary spiral springs. The bulbs Eli are preferably covered with net or other means to. prevent undue distortion of any part of same. This however is not shown in the drawings. v 1

According to a modification of our device 8,!)

.we may provide it with a supplementary bypass tube 16 as shown in Fig. 4 wherein the resilient main bulb or container 1 is represented as made in the form of a hollow ring containinganumber ofenclosed-independent 8.5.. bulbs ortubesto provide greater resiliency, each of such bulbs or tubes having perforations whereby water mayenter and be expelled. 4 and 5 represent the inlet and outlet valves as in the original device. The tube 16 i is provided, with a supplementarybulb 17 and with additional inlet and outlet valves 18 and 19 respectively. The inlet tube 2 is provided with a supplementary bulb 20 and a second valve 21. Cocks 22, 23' and 2a are provided in the several tubes. By these means the main bulb or container may be primed with water or the water may be exhausted fromsamethereby rendering it suitable for use as a life belt, raft or apparatus to 'aise a boat if sunk. In order to prime the main bulb 1 the cock 22 is closed and cocks 23 and :24 are opened; by operating the supplementary bulb 20 water is forced from the bottom of the boat through the main tube and main bulb expelling the air therefrom and filling them with water; all cocks are now opened, and the main bulb is ready for operation as previously described to dis charge the water from the boat. If it should be desired to discontinue to discharge the water from the boat and to exhaust the water from the main bulb the bulb 17 is operated, pressure being maintained upon the main bulb.

For the purpose of emptying water from a boat pulled up on to a ramp or platform the simple form of our invention shown in Fig. 2 may be employed either for pumping continuously or merely to start and carry on siphonage, for which latter purpose two or three compressions of the bulb will suflice.

hat we claim is 2- A device of the character described comprising a resilient tube having confined therein a plurality of large resilient perforated bulbs, an inlet tube connected to said first mentioned tube and provided with a supplementary bulb, a valve disposed upon opposite sides of said supplementary bulb, a cock in said inlet tube disposed between one of said valves and said first named tube, an outlet tube connected to said first named tube having a valve, a cock between said valve and said first named tube, and a bypass tube connected to said inlet tube between said cock and valve of the supplementary bulb, said by-pass tube being connected to said outlet tube in advance of the valve thereof; a cock in said by-pass tube, a valve in said tube bc tween said cock and said inlet, a bulb disposed in said by-pass and positioned between said cock and said outlet, and a valve between said bulb and outlet, whereby the closing of the cock in the by-pass and opening the cocks in the inlet and outlet tubes enables the device to be used as a pump by alternate compression and expansion of said first named tube, and whereby the closing of the cocks in the inlet and outlet pipes and opening of the cock in the by-pass, enables it to be used as a siphon once the fluid has been set in motion.

In testimony that we claim the foregoing as our invention we have signed our names this twelfth day of October, 1928.

JOHN ROBE MUIRHEAD. JOHN YVILLIAM MILLS. 

